Fatma Avlar, 17, died in hospital from wounds sustained in a cross-border rocket attack in Gultepe, Reyhanli in the border province of Hatay.
An earlier rocket attack struck the wall of a house in the same neighborhood, injuring another civilian.
The treatment of the other injured civilian continues.
Police, firefighters, and paramedics rushed to the scene of the attacks.
Two houses and several cars in the neighborhood were also damaged.
The attacks come amid a Turkish-led operation across the border in Syria to snuff out the terrorist threat there.
Turkey launched Operation Olive Branch on Jan. 20 along with Free Syrian Army (FSA) to clear PYD/PKK and Daesh terrorists from Afrin, northwestern Syria.
Since the start of the operation, the PYD/PKK has carried out cross-border attacks on Turkey by firing rockets on civilian neighborhoods.
According to the Turkish General Staff, Operation Olive Branch aims to establish security and stability along Turkish borders and the region as well as to protect Syrians from terrorist oppression and cruelty.
The operation is being carried out under the framework of Turkey’s rights based on international law, UN Security Council resolutions, its self-defense rights under the UN Charter, and respect for Syria's territorial integrity.